2. Definition of ATM
An ATM is an electronic device which allows a bank's
customer to make cash withdrawals and check their
account balance at any time without the need for a
human teller. Many ATMs also allow depositing cash or
cheques, transfer money between their banks. The
World's first ATM was installed in ENFIELD town in the
London on June 27, 1967 by Barclays bank.
ATMs are known by various other names including
Automated Transaction Machine, automated banking
machine, cash point (in Britain),money machine, bank
machine, cash machine, hole-in-the-wall, Bancomat (in
various countries in Europe and Russia), Multibanco
(after a registered trade mark, in Portugal), and Any Time
Money (in India).

3. An automated teller machine or automatic teller machine
(ATM), also known as an automated banking machine
(ABM) in Canada, and a Cash point (which is a trademark of
Lloyds TSB), cash machine or sometimes a hole in the wall
in British English, is a computerized telecommunications
device that provides the clients of a financial institution
with access to financial transactions in a public space
without the need for a cashier, human clerk or bank teller.
ATMs are known by various other names including ATM
machine, automated banking machine, and various regional
variants derived from trademarks on ATM systems held by
particular banks